<template>
 <div>
   <!-- 面包屑导航区域 -->
   <el-breadcrumb separator-class="el-icon-arrow-right">
     <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
     <el-breadcrumb-item>用户管理</el-breadcrumb-item>
     <el-breadcrumb-item>用户列表</el-breadcrumb-item>
   </el-breadcrumb>
   <!-- 卡片视图区域 -->
   <el-card>
     <el-row :gutter="20">
       <el-col :span="8">
         <!-- 搜索框区域 -->
         <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
           <el-button slot="append" icon="el-icon-search" @click="getUserListByName"></el-button>
         </el-input>
       </el-col>
       <el-col :span="4">
         <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
       </el-col>
     </el-row>
     <!-- 用户列表区域 -->
     <el-table :data="userList" border stripe>
       <el-table-column type="index"></el-table-column>
       <el-table-column label="姓名" prop="username"></el-table-column>
       <el-table-column label="邮箱" prop="email"></el-table-column>
       <el-table-column label="电话" prop="mobile"></el-table-column>
       <el-table-column label="角色" prop="role_name"></el-table-column>
       <el-table-column label="状态">
         <!-- 作用域插槽 -->
         <template slot-scope="scope">
           <el-switch
             v-model="scope.row.mg_state"
             @change="userStateChanged(scope.row)"
             >
           </el-switch>
         </template>
       </el-table-column>
       <el-table-column label="操作" width="180px">
         <template slot-scope="scope">
           <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
           <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
           <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
             <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
           </el-tooltip>
         </template>
       </el-table-column>
     </el-table>
     <!-- 分页区域 -->
     <el-pagination
       @size-change="handleSizeChange"
       @current-change="handleCurrentChange"
       :current-page="queryInfo.pagenum"
       :page-sizes="[1, 2, 5, 10]"
       :page-size="queryInfo.pagesize"
       layout="total, sizes, prev, pager, next, jumper"
       :total="total">
     </el-pagination>
   </el-card>

   <!-- 添加用户的对话框 -->
   <el-dialog
     title="添加用户"
     :visible.sync="addDialogVisible"
     width="50%"
     @close="addDialogClosed"
     >
     <!-- 内容主体区域 -->
     <el-form :model="addForm" :rules="addFromRules" ref="addFormRef" label-width="70px">
       <el-form-item label="用户名" prop="username">
         <el-input v-model="addForm.username"></el-input>
       </el-form-item>
       <el-form-item label="密码" prop="password">
         <el-input v-model="addForm.password" type="password"></el-input>
       </el-form-item>
       <el-form-item label="邮箱" prop="email">
         <el-input v-model="addForm.email"></el-input>
       </el-form-item>
       <el-form-item label="手机" prop="mobile">
         <el-input v-model="addForm.mobile"></el-input>
       </el-form-item>
     </el-form>
     <!-- 底部区域 -->
     <span slot="footer" class="dialog-footer">
      <el-button @click="addDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="addUser">确 定</el-button>
     </span>
   </el-dialog>

   <!-- 修改用户对话框 -->
   <el-dialog
     title="修改用户"
     :visible.sync="editDialogVisible"
     width="50%"
     @close="editDialogClosed">
     <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
       <el-form-item label="用户名">
         <el-input v-model="editForm.username" disabled></el-input>
       </el-form-item>
       <el-form-item label="邮箱" prop="email">
         <el-input v-model="editForm.email"></el-input>
       </el-form-item>
       <el-form-item label="手机号" prop="mobile">
         <el-input v-model="editForm.mobile"></el-input>
       </el-form-item>
     </el-form>
     <span slot="footer" class="dialog-footer">
       <el-button @click="editDialogVisible = false">取 消</el-button>
       <el-button type="primary" @click="editUserInfo">确 定</el-button>
     </span>
   </el-dialog>

   <!-- 分配角色对话框 -->
   <el-dialog
     title="提示"
     :visible.sync="setRoleDialogVisible"
     width="50%"
   @close="setRoleDialogClosed">
     <div>
       <p>当前用户：{{userInfo.username}}</p>
       <p>当前角色：{{userInfo.role_name}}</p>
       <p>分配角色：
         <el-select v-model="selectedRoleId" placeholder="请选择">
           <el-option
             v-for="item in rolesList"
             :key="item.id"
             :label="item.roleName"
             :value="item.id">
           </el-option>
         </el-select>
       </p>
     </div>
     <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
   </el-dialog>

 </div>
</template>

<script>
export default {
  name: 'Users',
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      // 验证合法
      if (regEmail.test(value)) return callback()
      // 验证不合法
      callback(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      // 验证合法
      if (regMobile.test(value)) return callback()
      // 验证不合法
      callback(new Error('请输入正确的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框显示与隐藏
      addDialogVisible: false,
      // 控制修改用户对话框显示与隐藏
      editDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFromRules: {
        username: [
          { required: true, message: '请输入用户名', tigger: 'blur' },
          { min: 3, max: 10, message: '用户名长度在3~10个字符之间', tigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', tigger: 'blur' },
          { min: 6, max: 15, message: '密码长度在6~15个字符之间', tigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      // 控制分配角色对话框
      setRoleDialogVisible: false,
      // 用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选择的角色ID值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码发生变化
    handleCurrentChange (newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听用户状态的改变
    async userStateChanged (userInfo) {
      console.log(userInfo)
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 通过用户名查询用户
    getUserListByName () {
      this.queryInfo.pagenum = 1
      this.getUserList()
    },
    // 监听对话框关闭的事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 发起真正的添加操作
        // console.log('发起请求')
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        this.$message.success('添加成功')
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (userId) {
      // console.log(userId)
      const { data: res } = await this.$http.get(`users/${userId}`)
      if (res.meta.status !== 200) return this.$message.error('获取用户信息失败')
      this.editForm = res.data
      console.log(this.editForm)
      this.editDialogVisible = true
    },
    // 监听修改对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户信息的请求
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) this.$message.error('更新用户信息失败')
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新用户列表
        this.getUserList()
        // 提示
        this.$message.success('更新用户信息成功')
      })
    },
    // 删除用户
    async removeUserById (userId) {
      // 提示是否删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // console.log(confirmResult)
      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')

      const { data: res } = await this.$http.delete(`users/${userId}`)

      if (res.meta.status !== 200) return this.$message.error('删除用户失败！')

      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 分配角色
    setRole (userInfo) {
      this.userInfo = userInfo
      // 展示对话框之前 获取所有角色列表
      this.$http.get('roles').then(response => {
        const res = response.data
        if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      })
    },
    // 点击按钮分配角色
    saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择一个角色')
      this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId }).then(response => {
        const res = response.data
        if (res.meta.status !== 200) return this.$message.error('分配角色失败')
        this.$message.success('更新角色成功')
        this.getUserList()
        this.setRoleDialogVisible = false
      })
    },
    // 监听分配角色对话框关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
